. >> unlike in syria, the security council did intervene in libya to prevent a bloodbath in benghazi. in march 2011, the ordered in international military operation to protect civilians, the beginning of the end for libyan leader muammar gaddafi. but the u.n. does not only make peace -- it also orders peacekeeping operations. these presume that both sides want to lay down their arms. >> studies show that if peacekeeping missions are sent in, peacekeeping missions as 60% to 80% more likely to hold. one current example of a successful un peacekeeping force is the mission to liberia. >> nearly a decade ago, the security council sent in thousands of peacekeepers to liberia. a civil war had devastated the country. just two years after that, ellen johnson was elected president, the first woman to lead an african state. former dictator charles taylor was put on trial for war crimes. for the u.n., it was a success story, but in syria, the legitimacy of the security council is in jeopardy. russia and china had vetoed an intervention. no one thinks that getting rid of their veto right is an opt